CN1817056B - Method and device for optimising cellular wireless communication networks - Google Patents
Method and device for optimising cellular wireless communication networks Download PDFInfo
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Abstract
The invention relates to a method for the efficient optimisation of cellular wireless message networks and a device for the alteration of said method in a cellular wireless message network to give an optimised network configuration by suitable changes to certain settings of the original network configuration, with the goal of a most evenly-balanced distribution of the user traffic per radio cell, formed by an accumulation of suitably-weighted, service-specific user traffic values across the radio cell surface in a radio network model, which are determined between the individual radio cells and optionally supplied to the message network as a new network configuration, which permits an at least as good, however mostly better throughput than the original network configuration, with an at least as good, however mostly better network quality, for example illustrated by a reduced blocking rate for attempted connections, whilst retaining the original network cover.
Description
Subject matter
The present invention relates to a kind of method and a kind of equipment that is used to carry out this method of optimizing the information throughput in the cellular radio communication network.
Prior art
Just there is such problem in introducing along with cellular radio communication network from the beginning, promptly network set up and later expansion and operation process in searching can realize the configuration of optimal with available hardware resource and frequency bandwidth resource.Target at first is to maximize information throughput under the situation that has acceptable network quality and enough network availability and network coverage respectively.At this, concrete aim parameter can be different.Therefore, for example blocking rate can be minimized, as for example illustrated in US patent 5,826,218.WO 98/53621 is again based on measured pilot reception performance number.In order to realize the target of the network optimization, different network configuration parameters is adjusted on local restricted ground usually.This can be for example as antenna diagram such in the US patent 5,276,907 or pilot power adjust respectively or as the adjustment of the receiver sensitivity among WO 01/37446 A1.
Can compare with the broadcasting of routine, usually just send the cellular phone network of information to user movably from fixing dispatching station, use such method, these methods are mainly being optimized network configuration based on the propagation characteristic of radio wave in neighborhood aspect the network coverage.In this case, adopt radio propagation emulation and/or in network, determine on the position measurement basically to mean receiving power and quality of service.The basic step of such method is at Norbert Geng, " the Planungsmethoden f ü r dieMobilkommunikation " of Werner Wiesbeck (Spring-Verlag Berlin, 1998, ISBN3-540-64778-3) in explanation.
In communication network, bandwidth assignment is given each sub-district of network such as the GSM standard of using a plurality of frequency bands.In this case, conclusive effect is played aspect throughput-maximized frequency being minimized and therefore make in the sub-district of frequency band suitably being distributed to network.Often such network planing method is summarised as term " Automatic Frequency Planning " (AFP).
Increase along with the importance of various different mobile data services, and along with to the 3G (Third Generation) Moblie networks development, for example according to the UMTS standard of exploitation in international " third generation collaborative project " framework (3GPP), the network planning of satisfying in the requirement aspect the specific user traffic of business becomes more and more important.Has extremely different features aspect the symmetry of various available business between its burst behavior, circuit switched or packet-switched transmission pattern, data transfer rate, average transmit power and down link and up link/asymmetric.In addition, must consider the extremely different physical transfer feature of part of miscellaneous service, because use different transmission channels usually for this reason.Be used for the prior art of communication network optimize purpose and conventional method and equipment and do not satisfy these specific (special) requirements the 3G (Third Generation) Moblie network.
The problem of invention
From the angle of Virtual network operator, seem that importantly all business that provide are with subjective quality of equal value basically and the coverage that equates and available.Therefore as if, necessary is, use network optimization program, and it provides available service in the communication network at whole supply area with enough quality.
Problem of the present invention is, considering under the situation of different business to different types of requirement of telecommunications, fast, cost is optimized the existing network configuration of communication network effectively, efficiently like this, yet consequently same good subsequently is available in the network configuration that improves to some extent aspect throughput and the network quality usually, keeps existing network coverage simultaneously.In this case, any change of subdistrict position is not suitable optimized Measures.
The solution of this problem
The method that utilization is mentioned in beginning solves this problem.In addition, utilize the equipment of being mentioned in beginning to solve this problem.
According to the present invention, especially in the following manner solve this problem, promptly some that changes network configuration iteratively by one or many be provided with, the particularly antenna direction or the transmitting power of the reference signal of pilot channel for example, in the sub-district of selecting by this method, determine improved network configuration, at this network configuration, the user traffic relevant in the balanced as much as possible network area of being considered with the sub-district area.In the traffic ideally balancedly under the situation of distributing between the sub-district, can be in predetermined subdistrict position direct traffic optimally.Support this method by the graphical display of sub-district area, these areas utilize and come painted corresponding to the color of the traffic of each sub-district.Therefore, problem area can be easily identified, and network configuration can be on these positions adjusted targetedly according to the present invention with high traffic.The possibility of the problem area in having proposed another kind of figure support identification mobile communications network among the WO 00/28756 with regard to other amounts.
In principle, the inventive method can be applicable to any cellular radio communication network.This method is particularly useful for third generation network, and this third generation network is for example according to the UMTS standard operation, and this third generation network provides multiple different telecommunication service to the mobile subscriber.An advantage of this method is when optimizing network configuration, can consider the different business that provide that require of having of any amount in communication network.
Compare with additive method, another advantage of this method is high-speed, can obtain the result at a high speed with this.Its reason is, this method is uniquely respectively based on the measurement data or the layout data of communication network, or based on its combination, these data normally exist in advance, because need them in planning process.In the optimizing process of iteration, do not need the communication network characteristic is carried out emulation, as for example that's how things stand in DE 196 19 208 A1.This method also can be easily by automation, and this allows computerized realization.Optionally the checking of the network configuration by the inventive method coupling is independent of the optimization method of itself, can freely selects thus and even transposing verification method.In addition, checking obtains bigger meaning because of this independence, and on the other hand, need not expensive in-site measurement, verify it also is possible.Can at random improve the accuracy of this method in the following manner, promptly consider under comfortable some environment to the additional data of the simplation verification of the network configuration of being mated and from other measurement data of actual communication networks.
The present invention includes a kind of method that is used to optimize communication network with mobile subscriber, the mixing of a kind of telecommunication service or multiple telecommunication service wherein is provided simultaneously to a user, and the value that the user traffic of every kind of business that is provided wherein is provided for the area element of very little rectangle with enough resolution, with by the value of each radio plot with the received power relevant of the reference signal of constant transmit power emission with the sub-district, these two values obtain with the position by measurement, analytical method, emulation or its any combination relevantly.Wherein in the communication network model, dispose the network configuration that iteration optimization is provided by the telex network value suitable weighting, that business is specific of the rectangular area element that adds up and by local restricted ground adjustment initial network, so that in actual communication networks, use the network configuration of this iteration optimization.
The present invention also comprises a kind of equipment that is used to optimize the communication network with mobile subscriber, this equipment comprises the radio access network of the wireless connections that are used for described mobile subscriber and has the communication network of the transmission channel of fixing networking, also comprise the database with the suitable bidirectional interface that leads to described communication network, this database comprises the configuration of current location data, network element, from measurement data, the counter data from network element, call statistics, the layout data of the difference amount of described communication network.Wherein be provided with simulator, this simulator produces the dummy model of described communication network in computer equipment, the configuration of this model loads from the database of current state with network configuration, and the current state of this model can be sent in the described database conversely, by coming according to the method described above of implementing in described computer equipment the configuration of this model is mated.
Explain
The present invention relates to a kind of method and a kind of equipment that is used to carry out this method that is used for optimizing the information throughput of cellular radio communication network.These cellular radio communication networks especially have mobile subscriber's cellular radio communication network, this cellular radio communication network provides the mixing of a kind of telecommunication service or multiple telecommunication service simultaneously to one or more users, as for example that's how things stand in the mobile telecom network according to the UMTS standard.The example arrangement of this communication network with four base station B110, B120, B130 and B140 has been described in Fig. 1.
Conclusive being characterised in that of the present invention in order to carry out this method, does not need detailed emulation, investigation or measurement.On the contrary, in any case this method based on common existence and data that in the network planning and optimizing process, need.This guarantees the quick execution of the method for planning demand Network Based.The general process of this method has been described in the block diagram of Fig. 2.
According to the step 210 of Fig. 2, suppose exist relevant with the position, communication network or network portion to be optimized respectively about the data of user traffic and radio net coverage.Aspect this, necessary is, provides these data with enough areal resolutions, thereby guarantees, for the overlay area of the arbitrary cells of communication network, has the value of the described amount of quite big quantity in all cases.These data suitable but be not that enforceable layout has the rectangular matrix form, this rectangular matrix is made up of a plurality of relatively little rectangular area elements, and each element wherein has the analog value of described amount therewith relatively.
User traffic is each the professional traffic that provides in communication network, and this traffic is determined on diverse location.The user traffic data not only can but also can be obtained by its combination in any by measurement, numerical value or analytical method or emulation.
From being obtained by the received power relevant with the sub-district of each sub-district with the reference signal of constant transmit power emission, this received power is detected on diverse location as the required network coverage of input.This reference signal can for example be a pilot channel, as be used to the radio identification of user's mobile radio station in addition in many mobile communications networks.If reference signal such in communication network does not exist, then can suppose virtual reference signal, this virtual reference signal is launched with identical transmitting power by each sub-district of communication network.With with mode identical under the situation of user traffic, the data of Reference Signal Received Power both can be obtained by measurement, numerical value or analytical method or emulation respectively, also can obtain by its combination in any.Often for example there be the path loss data relevant with the position from the electric field strength of each base station location with matrix form, by means of this path loss data, considering under the transmitting power of reference signal, employed antenna and other the situations, can calculate the Reference Signal Received Power relevant with the position such as the radio propagation loss of body damping.
Existing on each position of Reference Signal Received Power data, in the communication network model, determine to have the sub-district of optimum reception power.By this way, provide the related of area element and sub-district.All area elements that are associated with certain sub-district are counted as sub-district area (following also only as " sub-district ") with its integral body.Because effective physics propagation conditions all business that in communication network, provided in the radio channel; and owing to be used to guarantee the common based on the sub-district handoff algorithms as measured Reference Signal Received Power on user's mobile radio station of user mobility, determined sub-district area can be used as good being similar to the real cell that occurs in communication network in the communication network model.In the example part of the mobile communications network of Fig. 1, draw in described mode just now around formed sub-district, base station with solid line.
The objective of the invention is to, the optimized distribution of user traffic between the sub-district of passing through to be provided improved the information throughput in the communication network.Have been found that all professional user traffic just can guide with the quality of the best so if there is balanced as far as possible traffic distribution.Just in this point, this method is intended to set up this traffic equilibrium between the sub-district.Therefore, in order to reach this purpose, some sub-district area must relative to each other move, to allow exchanging constant and fixing in other cases user traffic between the sub-district.Usually, determine the user traffic of each sub-district area by the current traffic value in each sub-district in the cumulative communications network model.Because the traffic of every kind of business may be extremely different on a certain position having under the situation of multiple business, so the traffic value of different business must totalize in the mode of suitable weighting.The radio interference that produced by corresponding service reality and the utilization of resource are depended in weighting.Therefore, depend on communication network, enter traffic weighting such as the parameter of the ratio of system bandwidth for example, channel width, the signal power that will reach and interference power, spreading factor, average or maximum data rate, effective factor, coding limit etc.In Fig. 1, indicate the traffic value of each sub-district that totalizes by this way with V110, V120, V130 and V140.
After the telex network value relevant with the sub-district can be used, at first according to the step 220 among Fig. 2, must assess reached, approximate to the basis equalization of user traffic between the desired sub-district.For this reason, as a kind of possible flexible program of the present invention, the graphical display that can use the mobile communications network of being investigated is similar to Fig. 1 as auxiliary, and each sub-district area uses the color that is associated with the user traffic that is wherein realized to fill.If reached enough equilibriums of user traffic between the sub-district after the investigation in the step 230 of Fig. 2, so can method ends, and can make resulting thus network configuration under the simplest situation as shown in Figure 2, can be used for the network planning as improved foundation of planning according to step 270.If also do not reach this state, in the step 240 of this method, this demonstration is used for the such problem area in location fast so, and adjacent cell is realized the extremely different traffics in these problem areas.In another flexible program of the present invention, also can be by the identification of numerical method with automatic mode problem of implementation zone, the difference of the telex network value in this numerical method between the investigation adjacent cell.So, this automatic step be integrated into comprise Fig. 2 step 220 to 250 whole optimization method, so that minimize the difference of the telex network value between the sub-district.
Following the part of the step 250 sub-district area afterwards in Fig. 2 moves and can realize in the following manner, promptly change some network configuration parameters on each network element in the communication network model, the antenna tilt angle or the antenna height that particularly suitably mate applied respective antenna figure perhaps for example mate the transmitting power in place, selected sub-district reference signal.Because as mentioned above, these all parameters all enter the definite of Reference Signal Received Power, this Reference Signal Received Power has decisive meaning for the formation of sub-district area, so also can change the sub-district area in this way.If for example in the network configuration of Fig. 1, in the sub-district of base station B110, detect the high user traffic V110 of local restricted, then should make suitable network parameter adjustment, according to the present invention, this causes reducing of sub-district area, and therefore causes the part traffic to transfer to adjacent cell from this sub-district.After having adjusted network configuration, realized moving by the sub-district area shown in the dash line.Therefore, from the traffic V110 of the sub-district of base station B110, having deducted fixing part traffic value V112, V113 and V114.These values have been distributed to the sub-district of base station B120, B130 and B140, and as shown in FIG., these sub-districts have traffic value V120+V112, V130+V113 and V140+V114 now respectively.If because the telex network value of each sub-district of change of being done is than balanced more in the past, so therefore the network configuration that realizes is just better.
Preferably, be used to reach the change of sub-district area of the basis equalization of user traffic between the sub-district iteratively, so that can make the initial network configuration step by step near the network configuration of optimizing.In an iterative step, only change one or several network configuration parameters.After this, check approaching to the desired equilibrium of user traffic between the sub-district again, therefore become the basis by the defined new sub-district area of network configuration after changing according to the step 220/230 of Fig. 2.The necessity that obtains network configuration in next iterative step from the result of this check changes.Also can make this process automation by means of numerical method.When having reached user traffic between the sub-district enough balanced, can stop progressively approaching.Especially, a criterion is, compares with the average user traffic in the communication network model, and the traffic that has initially in the sub-district of the highest user traffic obviously reduces.This traffic reduces and reduces the local interference level, can also improve network quality thus.
Show the network configuration of distributing if reached than user traffic between the remarkable more balanced sub-district of initial configuration, so according to a favourable flexible program of the present invention, the result of the network coupling of step 260 that can proof diagram 2.This checking can for example realize by network simulation.In this case, preferably when emulation, should make every effort to consider the time response of network, so that can the estimation network quality, although this is not indispensable.As measuring of network quality, for example can use and to block that exchange is attempted or the error rate of the number of times that interrupts connecting and position, appearance and connection delay or each are connected or the throughput of each sub-district.Certainly, after the network coupling, also must guarantee enough network coverages, that is to say that miscellaneous service must be available on preposition.
Then, as another favourable flexible program of the present invention, the result of communication network can be used to adopt in the optimization repeatedly of communication network, to improve the accuracy of this method.This amount especially can be the current user traffic that occurs in network simulation, but also can be the amount of expression radio interference.In addition, the latter comprises so-called " noise penalty amount (noise rise) ", its characterize with a sub-district local correlation and by the ratio of total interference level of this sub-district in caused radio interference of other users and the up link.This amount especially provides the interesting indication about the localized network utilization for cdma network.The information that part about call denial occurs, connection is interrupted or the sub-district switching of failure is attempted also can be used as the continuous boundary condition of optimizing of communication network.In addition, the amount such as the ratio of reference signal transmitting power for example and total interference power of each sub-district also can be used to improve the inventive method.
In a similar fashion, in another flexible program of the present invention, this network simulation discussed above can be applied to initial network configuration in advance, compares with the network configuration of optimization so that allow aspect network quality.Thus, the additional amount of being mentioned from network simulation also can add the inventive method.Except as the traffic value that directly simulation of input variable is determined, especially can determine other boundary conditions of this method.This for example relates to connecting and interrupts and the different reasons and the partial restriction of refusal, their analysis is provided the interesting information of fine setting control the inventive method.As flexible program about this, from other amounts of actual communication networks, particularly the measured value of those amounts above-mentioned also can enter the initial checking of initial network configuration.
In order to utilize network configuration, this method is incorporated in the present device shown in Fig. 3 by the determined improvement of the inventive method.In order to explain that in more detail distinct between radio access network 310 and information exchange network 330, these two networks can intercom mutually via bidirectional interface.Radio access network is that part of communication network that is established to mobile subscriber's direct dedicated radio link, that is to say that it comprises the base station of communication network in fact, and if need, then comprises other assemblies, as long as they are necessary with user's direct communication.Information exchange network is set up base station in the communication network and switching station and to the networking of the gateway of other networks or service provider.Via interface 320, on both direction, both can transmit the user message that is sent, can transmit multiple signaling and control information again.For this information network has disposed database 350, in this database the position data, configuration data of each network element of combination, from the measurement data of the difference amount of information network, counter data, call statistics, layout data or the like from network element.At this, the database symbol among Fig. 3 is only represented the logical collection of all these data.Depend on the realization at the Network Provider place, this data acquisition system also can be realized by a plurality of databases of coupling as required.Data from information network can at any time be stored in this database via bidirectional interface 340, and new network configuration also can be transferred to information network by this bidirectional interface.In addition, alternatively, amount and the parameter from information network measured by mobile measuring equipment can be stored in this database, and it is motor-driven that this mobile measuring equipment there is no need, as shown in the figure.
In order in equipment, to realize the inventive method, there is computer equipment 370, this computer equipment 370 comprises the Numerical Implementation of the communication network of communication network model 380 forms.This model reflection is disposed by the initial network that bidirectional interface is attached in the database.Now the inventive method 390 is element task with the communication network in this computer equipment as shown in Figure 2, so that set up the network configuration of improving.In this case, in the communication network model 380 of Numerical Implementation, carry out the change of network configuration, the configuration of improvement directly is set thus subsequently there.If need, can control optimization with the monitor message network by the communication network optimize device.Yet applying of this influence can fully limit by automation recited above.
Now, the network configuration of therefore determined improvement at first can be sent to database via interface 360, and be sent to therefrom in the described information network.From information network 310,330 self or allow the throughput that reached and the improvement of network quality are assessed via the measured value of measuring equipment 339.Like this measured can be submitted to described computer equipment again, so that promote the checking to the network configuration of improving there.
Because in information network, particularly in communication network with multiple business that provides, the local users traffic of every kind of business may be very tempestuously and in short time, changed for several times in promptly one day, suit so allow network configuration adapt to the situation that is changed rapidly about the traffic.This can utilize a kind of flexible program of present device to realize, wherein based on method be favourable at a high speed.In this flexible program, be stored in the network configuration in the database and the current state of the traffic and be sent to computer equipment 370, and utilize the inventive method processed at once there.Then, the network configuration of determining of mating the instantaneous network situation is better retransferred to database rapidly, and it directly is sent in the information network therefrom, and becomes effective there.This allows faster the user traffic that changes in the information network to be reacted.
Although explained the present invention and advantage thereof in detail, should clarify, do not deviating under the situation of the spirit and scope of the present invention that cover as claim, can be implemented in of the present invention various other modifications and change within the meaning of above-mentioned explanation.
The example of the embodiment scheme that describes below is used for illustrating by means of the selected portion of UMTS/FDD communication network the inventive method of optimization information network, for example at H.Holma and A.Toskala (ed.) " WCDMA for UMTS " (second edition, JohnWiley﹠amp; Sons, Chichester UK, ISBN 0-470-84467-1) in the general features of this UMTS/FDD communication network has been described.Starting point is the zone that covers about 10km2, in this zone according to conventional and arrange and dispose 15 cell sites of total that have 3 sub-districts separately corresponding to the planing method of prior art now.For each cell site, the path loss that is arranged in the receiver location in the matrix (path loss matrix) utilizes detailed 3D surrounding area model to calculate according to prior art by means of radio optics propagation model (radiation opticalpropagation models) with the spatial resolution of 10m.In addition, about relevant with the position, be the basis that the information of the traffic density of form constitutes speech business (Speech) and web service (WWW) with traffic requirement matrix with 25m spatial resolution.
In this embodiment, analyzing the initial network configuration aspect telecommunications capacity and the telecommunications quality by dynamic UMTS system simulator.Then, optimize this communication network, and aspect capacity of being realized and the quality change network configuration after changing is being carried out dynamic analysis again by the inventive method.
For each sub-district, based on traffic model and the basis of the available traffic density information relevant with the position on, calculate the traffic of resulting equivalence.The local feed region of each sub-district that is produced by ripple propagation state and network configuration can be come mark with color, and colour coding is corresponding to the traffic of the equivalence of being calculated before.At this, absolute value is not conclusive, and that the relative deviation of the value of adjacent cell is only is conclusive.
For spatially contiguous sub-district, can expect the extremely different traffics to be guided.After aspect capacity and quality, having analyzed network configuration by Dynamic System Simulator, according to the present invention, only based on the given traffic relevant and RTTY multicast data with the position, the transmitting power that changes antenna direction and reference signal is iteratively determined communication network, compare with initial configuration, this configuration provides the remarkable more balanced traffic that can expect.
As can be seen, provide more balanced traffic distribution by the determined network configuration of optimization method of the present invention for the sub-district.Therefore, should utilize available total communication network capacity better.
Be apparent that, in described example, by optimization method of the present invention, initial obstruction be connected interrupt probability and can be lowered.Adopt the network configuration of optimizing to allow and to serve nearly all business demand.In this embodiment, can show that the connection of being safeguarded simultaneously by communication network increases by 11% under described general situation.
Claims (25)
1. method that is used to optimize communication network with mobile subscriber, the mixing of a kind of telecommunication service or multiple telecommunication service wherein is provided simultaneously to a user, and the value that the user traffic of every kind of business that is provided wherein is provided for the area element of very little rectangle with enough resolution, with by the value of each radio plot with the received power relevant of the reference signal of constant transmit power emission with the sub-district, these two values are by measuring, analytical method, emulation or its any combination obtain with the position relevantly
It is characterized in that,
In the communication network model, the initial network configuration is adjusted on the local restricted ground that is similar to of the specific telex network value suitable weighting by the rectangular area element that adds up, professional and the basis equalization by assessing user traffic between the desired radio plot, provide the network configuration of iteration optimization, so that in actual communication networks, use the network configuration of this iteration optimization.
2. according to the method for claim 1, it is characterized in that described communication network is a cellular radio communication network.
3. according to the method for claim 1, it is characterized in that, the value of the value of user traffic and the received power relevant with the sub-district and the very little rectangular area element of matrix form are relevant, and described rectangular area element is relevant with specific radio plot and cover a certain zone.
4. according to the method for claim 1, it is characterized in that, in described communication network model, consider the path loss between the signal transmission period.
5. according to the method for claim 4, it is characterized in that the path loss between described signal transmission period is to cause with decay distance dependent owing to transmitting power.
6. according to the method for claim 4, it is characterized in that, when the specific telex network value of described business is weighted, consider described path loss.
7. according to the method for claim 1, it is characterized in that, in all cases, according to the weight of calculating each professional specific telex network value by the radio interference of the actual generation of related service and each user's resource utilization, wherein consider a plurality of parameters according to employed radio standard in the described communication network.
8. according to the method for claim 7, it is characterized in that described parameter comprises that system bandwidth, channel width, the signal power of corresponding service limit with ratio, effective factor, the coding of interference power.
9. according to the method for claim 1, it is characterized in that the calculating of mathematical optimization method realizes being used to change iteratively some setting of described network configuration, so that reach the maximum equilibrium that the user traffic of each sub-district between each sub-district is distributed.
10. according to the method for claim 1, it is characterized in that the network configuration of described optimization is by verifying the network simulation of suitable radio net model subsequently.
11. method according to claim 10, it is characterized in that, the network simulation that is applied to the network configuration of the optimization in the described radio net model comes work according to the dynamic network emulation mode, and this dynamic network emulation mode is characterised in that this dynamic network emulation mode carries out suitable modeling to be identified for assessing the significant feature of network quality to the characteristic relevant with the time of communication network.
12. method according to claim 1, it is characterized in that, the network simulation that is applied to the network configuration of described optimization comes work according to the network simulation method of adding up, the network simulation method that the network simulation method of this statistics is characterised in that this statistics usually do not considered before or the situation of afterwards state under a large amount of instantaneous states of described communication network are carried out modeling so that be identified for assessing the statistical nature of network quality.
13. the method according to claim 12 is characterized in that, described modeling is a Monte Carlo simulation.
14. method according to claim 1, it is characterized in that, each change described network configuration before and afterwards, yet at least in the beginning of this method with when finishing, with the corresponding distribution of user traffic on each sub-district area, and in case of necessity from other parameterized graphicses of the input data of this method and/or network simulation result be presented among the figure in the zone that covers by described communication network, so that determine best network configuration, the corresponding distribution of described user traffic on each sub-district area illustrates that by this way promptly each sub-district area uses the color clearly relevant with the user traffic that is provided next painted in illustrating.
15. method according to claim 14, it is characterized in that, the user traffic of each sub-district and be used to discern the sub-district of those average user traffics that obviously depart from each sub-district and provided in case of necessity from the graphical display of other parameters of the input data of this method and/or network simulation result, so as in the continuous step of the iteration of this method by changing some network configuration parameters, considering that the equilibrium that is reached user traffic between the sub-district by the boundary condition of other shown parameter-definitions in these sub-districts distributes in case of necessity.
16. method according to claim 1, it is characterized in that, in each iterative step, determine matrix according to analysis to the geographical neighborhood of sub-district, described matrix column and row use the sub-district of the network portion of being investigated to indicate, and in the territory of described matrix, write down the difference and other the boundary condition in case of necessity of the traffic value of respective cell, so that in the process of automation, determine at least one sub-district thus, subsequently at some network configuration parameters of this cell change to improve the network configuration of radio circuit.
17. method according to claim 1, it is characterized in that, assess initial network configuration by suitable radio net model being carried out network simulation, and the throughput relevant with the sub-district joined in the optimization of described communication network as the boundary condition that adds as additional input and local connection request refusal and the reason that is connected interruption and position that occurs.
18. method according to claim 1, it is characterized in that, assess the initial network configuration by adding, and these measured values are joined as the input that adds in the optimization of traffic distribution between the sub-district of described communication network from the throughput relevant of actual communication networks with the sub-district.
19. equipment that is used to optimize communication network with mobile subscriber, this equipment comprises the radio access network of the wireless connections that are used for described mobile subscriber and has the communication network of the transmission channel of fixing networking, also comprise database with the suitable bidirectional interface that leads to described communication network, this database comprises current location data, the configuration of network element, measurement data from the difference amount of described communication network, counter data from network element, call statistics, layout data, it is characterized in that, be provided with simulator, this simulator produces the dummy model of described communication network in computer equipment, the configuration of this model loads from the database of current state with network configuration, and the current state of this model can be sent in the described database conversely, by in described computer equipment, implement require according to aforesaid right in any one method come the configuration of this model is mated.
20. the equipment according to claim 19 is characterized in that, described communication network is a cellular radio communication network.
21. the equipment according to claim 19 is characterized in that, the transmission channel that is used for the fixedly networking of message transmission is segmented so that freely coupled together.
22. the equipment according to claim 19 is characterized in that, the network configuration that is sent to the coupling of described database from described computer equipment is sent to information network.
23. the equipment according to claim 19 is characterized in that, when needed, can described database be subdivided into a plurality of databases that intercouple according to the type of the data of being stored.
24. the equipment according to claim 19 is characterized in that, utilizes the measured value of the mobile measuring equipment record in the described communication network to be stored in the database.
25. equipment according to claim 19, it is characterized in that, to be sent to described computer equipment from the instantaneous network configuration and the current traffic data of described database, so that determine to mate better the network configuration of current network condition by the optimization method of application rights requirement 1, and the network configuration of subsequently this being mated better current network condition directly returns to described database, and return to described communication network therefrom, this network configuration of mating current network condition better becomes effective in real time in described communication network.
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| PCT/EP2003/012333 WO2004043096A2 (en) | 2002-11-06 | 2003-11-05 | Method and device for the optimisation of cellular wireless message networks |
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Also Published As
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| US20050254455A1 (en) | 2005-11-17 |
| EP1559289B1 (en) | 2009-09-16 |
| ATE443416T1 (en) | 2009-10-15 |
| US7768968B2 (en) | 2010-08-03 |
| WO2004043096A3 (en) | 2005-01-20 |
| ES2333221T3 (en) | 2010-02-18 |
| AU2003301796B2 (en) | 2009-08-20 |
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| DE10251993B4 (en) | 2012-09-27 |
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| JP4566001B2 (en) | 2010-10-20 |
| WO2004043096A2 (en) | 2004-05-21 |
| AU2003301796A1 (en) | 2004-06-07 |
| CN1817056A (en) | 2006-08-09 |
| DE10251993A1 (en) | 2004-05-19 |
| EP1559289A2 (en) | 2005-08-03 |
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